[super geek rant]
Get on good terms with the Polaris, then hijack a Rebel Dragon Carrier, strip it, add the following:
1.) Every form of armor in the game. Carbon Fiber, Matrix Steel, Polaris armor and shielding
2.) Every available reactor/generator (solar panels, nuclear, polaris, etc)
3.) Every speed/maneuverability boost/upgrade
4.) Point defense weapons: one ion cannon, one or two polaris direct energy turrets, a couple storm chainguns (can't get the alliance quad turrets if friendly with Polaris, sadly, without mods)
5.) Forward firing direct energy weapons: Polaris beams, thunderhead lances... there's something else...
The resulting ship is one of the fastest non-fighters in the game, has nearly perfect point defense (can't be touched by even a swarm fighters, or any missile weapons except EMP torpedos), and has enough direct firepower to stand toe to toe with any ship in the game except the Vell-os Javelin, and some of the easter egg developer ships (most go down with a bit of effort).
You can literally park yourself directly in front of the strongest Polaris ship - the Scarab - right in it's wheelhouse, open fire, and down it before it drops your shields. Add in some Wraith cannons for the one ship you can't go toe to toe with (the Javelin).
The best part? If you stack every single generator in the game, it turns out you can burn afterburners non-stop, and be relentless with your direct energy weapons, without ever running out of fuel - your regen rate is faster than you can possibly use in any realistic combat situation.
The reason this all works is because the dragon carrier has way, waaay too many cargo bays for its size class / speed, so if you strip them all out, you can load the thing up like you could only normally do with a slow moving supertransport. And since its so small, some of the items that scale their cost/weight with the size of your ship (like matrix steel armor) don't have a big tonnage penalty.
I've taken on the game in this ship - swarms of Krpyt pods, entire Vell-os fleets, Polaris home defense fleets... if there was a PvP environment, I'd tear apart your best super carrier or Valkyrie V fleet without batting an eyelash.
[/super geek rant]